We present a case of low-grade angiosarcoma of the breast. A 26-year old woman presented with a lump in the left breast. An elastic hard and ill-defined tumor, 80 x 50 mm in size, was palpated in the upper region of her left breast. Mammography showed a dense lesion with poorly defined border. Ultrasonography showed a hyper-and hypo-echoic lesion with an unclear border, but no definite tumor. Fine needle aspiration cytology showed no evidence of malignancy. Therefore, she was followed with a diagnosis of mastopathy. Six months later, the lump got enlarged. A contrast-enhanced MRI of the breast was performed. It showed a 100 x 60 mm enhancing vascular mass. Most parts of the tumor enhanced remarkably at the early phase, and prolonged enhancement was recognized at the late phase. Core needle biopsy was performed, and a possible angiosarcoma was diagnosed. It is not easy to diagnose the mammary angiosarcoma. MRI may contribute to the accurate diagnosis and play an important role regarding this entity.

A 58-year-old man presented with paralysis and pain in the left leg, and a mass was found in his thigh. Because of the growth of the mass and the worsening of his symptoms, the patient visited our hospital. Multidetector computed tomography revealed a large deep femoral arterial (DFA) aneurysm. Surgical intervention was planned because of the large size of the aneurysm, the high risk of perforation and the worsening symptoms. Aneurysmectomy and revascularization of the distal DFA with an artificial blood vessel graft were performed. DFA aneurysms are extremely rare. These aneurysms have a high rate of rupture, and surgery plays an important role in their treatment. However, standard methods have not yet been established because of their rarity of DFA aneurysm. We describe a case of DFA aneurysm in a patient who was successfully treated with aneurysmectomy and revascularization with an artificial blood vessel graft.

Background: Malignant pericardial effusion caused by carcinomatous pericarditis is a complication of advanced malignancy. Breast cancer is the second most important cause of malignant pericardial effusion. Malignant pericardial effusion is the end stage of breast cancer, and the prognosis is very poor. Pericardial effusion may cause cardiac tamponade and sudden death if it is not controlled properly. There is a debate on which is the best method to control pericardial effusion. Case Report: We describe the clinical course of a 55-year-old woman with recurrent breast cancer, pericardial effusion, and cardiac tamponade caused by carcinomatous pericarditis. Thoracoscopic pericardial window was performed to control the pericardial effusion. The patient survived for about 5 years after being diagnosed with pericardial metastases. Conclusion: The observed long-term survival in such a patient with the development of pericardial effusions and cardiac tamponade caused by carcinomatous pericarditis attributable to breast cancer is rare. Thoracoscopic pericardial window was effective in controlling the pericardial effusion.

Sonographic guidance during VATS is helpful for locating lesions and determining the extent of surgical resection. The color Doppler method was also useful for evaluating intratumoral blood flow, which yielded significant information for differentiating primary lung cancer, metastatic tumors, and various benign tumors.

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